On Mon, 2017-01-30 at 17:22 -0800, Steve Longerbeam wrote:

On 01/30/2017 04:45 PM, Russell King - ARM Linux wrote:

quoted

Hi,

Trying this driver with an imx219 camera (which works with Philipp's
driver) results in not much happening... no /dev/media* node for it,
no subdevs, no nothing.  No clues as to what's missing either.  Only
messages from imx-media are from registering the various subdevs.

[   37.444877] imx-media: Registered subdev imx6-mipi-csi2
[   37.444973] imx-media: Registered subdev imx219 0-0010
[   38.868740] imx-media: Registered subdev ipu1_ic_prpenc
[   38.869265] imx-media: Registered subdev ipu1_ic_prpvf
[   38.869425] imx-media: Registered subdev ipu1_ic_pp0
[   38.870086] imx-media: Registered subdev ipu1_ic_pp1
[   38.871510] imx-media: Registered subdev ipu2_ic_prpenc
[   38.871743] imx-media: Registered subdev ipu1_smfc0
[   38.873043] imx-media: Registered subdev ipu1_smfc1
[   38.873225] imx-media: Registered subdev ipu2_ic_prpvf
[   38.875027] imx-media: Registered subdev ipu2_smfc0
[   38.875320] imx-media: Registered subdev ipu2_ic_pp0
[   38.877148] imx-media: Registered subdev ipu2_smfc1
[   38.877436] imx-media: Registered subdev ipu2_ic_pp1
[   38.932089] imx-media: Registered subdev camif0
[   38.956538] imx-media: Registered subdev camif1
[   38.959148] imx-media: Registered subdev camif2
[   38.964353] imx-media: Registered subdev camif3
[  206.502077] imx-media: Registered subdev ipu1_csi0
[  206.503304] imx-media: Registered subdev ipu1_csi1
[  206.503814] imx-media: Registered subdev ipu2_csi0
[  206.504281] imx-media: Registered subdev ipu2_csi1

I also get:

[   37.200072] imx6-mipi-csi2: data lanes: 2
[   37.200077] imx6-mipi-csi2: flags: 0x00000200

and from what I can see, all modules from drivers/staging/media/imx/ are
loaded (had to load imx-csi by hand because of the brokenness in the
drivers/gpu/ipu code attaching an device_node pointer after registering
the platform device, which changes what userspace sees in the modalias
file.)

Any clues at what to look at?

Hi Russell,

I'm not familiar with IMX219, can you send me the source for the
imx219 subdev? I don't see it in 4.10-rc1.

I'm also having trouble finding a datasheet for it, but from what
I've read, it has a MIPI CSI-2 interface. It should work fine as long
as it presents a single source pad, registers asynchronously, and
sets its entity function to MEDIA_ENT_F_CAM_SENSOR.

What about MEDIA_ENT_F_VID_IF_BRIDGE?

regards
Philipp